Transformer Inspection - What Should Be Checked? We need to check transformers regularly for making sure that they work properly throughout their lifetime. There are various components in a transformer and each of those components has a special function to perform. Therefore, we need to be comprehensive and thorough while checking the overall functioning of it. Transformer Manufacturers also advise that transformers should be inspected in a set routine to get maximum output. It is a major investment and you should make sure that the investment is worthy. So, do following things to ensure that the device you are buying will meet industry standards and provide the quality